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No, that's totally fine if that's easier for you.

Instead of completely removing the remapping chip and trying to reconnect the cut traces underneath, you could map the controls to the default for your cabinet, then lift pin 1 and pin 28 of the remapping chip out of the vias on the PCB. This will remove the P1 and P2 start button inputs from...

Good to see an alternative available. I hate being the only one offering a solution since I don't have time for it. Feels like I'm holding people hostage in a way.

All 8 buttons are routed to the G harness according to the pinout on the Arcade Otaku wiki. The pinouts for both auxiliary harness connectors are printed on the silkscreen on the back of the Console I/O.

Are your running key writing and encrypted roms? If you are, try running a decrypted rom set and see what happens. Also I assume that the battery has been removed from the B board?

The audio amp uses +12v, all of the other logic on the A and B boards use +5v. The multikit probably doesn't use +5v directly for anything other than possibly the level shifters, so the multi might be fine, but the A and B boards could be completely fried. You said you don't have a supergun yet...

So I wanted to let everyone know that the Console I/O V3.1 is now in stock on my website. This is a newly updated version that adds a second 6 pin harness connector that allows you to connect P1 and P2 B7-B8 buttons directly to your I/O board. The PCB color has also now been changed to matte...

I'm wondering this as well. I've finally got an F3 board on the way and now the multi appears to be out of stock everywhere.

The title says it all. I'm looking for a Seibu SPI system with either Raiden Fighters 1 or 2 (or both if someone happens to have them available.) My dedicated vertical Aero City is almost complete and I'm trying to acquire some of my childhood favorite vertical shooters.

Don't worry guys I have no intention of starting to offer repair services. I don't have the time for that, and I'd have to charge too much to be worthwhile for anyone. This is purely for my own benefit. Now, with that said... Would you believe it's time for round 3? This board is the one I was...

Was your B board still connected to the A board when you left it to discharge?

Sounds like the key for 1944 is currently written to your B board. Does your B board still have a battery? If not try to short the legs of EXC5 with the B board disconnected from the A board and then try running decrypted roms.

Time for round 2. This B board was one of 3 that I acquired from another forum member a few days ago. It didn't have the kind of severe pin damage on the customs that the first one did, but it was definitely in need of some work. My first course of action on this one was to clean the corrosion...

Thanks for the info. I have a strange new development with this one. I tried running this B board with Razoola's suicide test rom and a blank key written to it and it consistently boots in that scenario. This is a -4 board, and I have read that they can struggle with key writing, so this made me...

If you hook up only the second PCB are all 6 buttons registered?

Still looking. I've had no luck on YAJ.

Glad to hear you got it working. It's utterly bizarre that removing C1 solved your problem. C1 is just a bypass cap for the power input of the MCU.

Thanks a lot for the work you've done. This documentation is so useful for repairs. While I have your attention, I have another B board that is exhibiting behavior that I'm struggling to explain. It boots consistently to a green screen. I've probed the graphics addresses and data and I get...

Gentlemen, we got 'em. After looking through the schematic in the CPS2 reverse engineering project that @ekorz linked, I tried to track down any and every port that could be related to graphics generation. I probed out all of the enable signals for the graphics chips, I looked at all of the...

I fully agree, but... This. This is a practice exercise for me. I'm testing my skills and trying to expand my diagnostic toolbox. Edit: @ekorz wow, I had not seen that project before. I was working off of the earlier B board trace out that apparently led to that full reverse engineering...